Loom shuttle



Nov. 5,21929. v A. s. HU'rcHlNs 1,734,092

LOOM SHUTTLE Filedv Oct. 5, 1927 l F@ 5 H//m 5mm/g Patented Nov. 5, 1929UNITED STATS fr; o

ALLAN S. HUTCHINS, 0F WORCESTER, IVIASSACH'U'SETTS, ASSIGNOR TO CROMPTON85 KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION 0FMASSACHUSETTS LOOM SHUTTLE Application filed October 3, 1927.

This invention relates to shuttles for use in weaving and moreparticularly to shuttles used in the weaving of silk weft or other simi-22 larmaterial. Insuchweaving,itis foundvery desirable to provide someform of slack takeup mechanism in the shuttle itself, to maintaintension on the weft and prevent uncoiling and kinking thereof.

It is the general object of my invention to improve such slack take-updevices as heretofore known, providing a more effective and reliablemechanism, and one by which the desired object may be adequatelyattained.

My invention further relates to arrangements and combinations of partswhich will be hereinafter set forth and more particularly pointed out inthe appended claims.

A preferred form of the invention is shown in the drawings in which Fig.1 is a plan view of a shuttle embodying my improvements;

Fig. 2 is an enlarged plan view of one end portion of the shuttle,partly broken away to show the tension or take-up mechanism;

Fig. 3 is a side elevation of said end portion of t-he shuttle, and yFigs. 4, 5 and 6 are transverse sectional elevations, taken along thelines 4-4, 5 5 andY 6-6 respectively in Fig. 3.

Referring to the drawings, I have shown a typical silk shuttle S havingarbobbin B secured therein by clamping jaws 10. Friction material 11,such as soft fur, is provided to engage the weft on the bobbin andprevent premature unwinding thereof.

The front end portion of the shuttle vis provided with a forwardlyextending passage 15, open at the top and also open at its rear end tothe interior of the shuttle. A slot 16 (Fig. 3) extends downwardly andrearwardly in one side wall of the shuttle and communicates freely inthe upper and middle portions of its length with the passage 15.

At its middle portion the slot 16 is provided with a downwardly offsetpassage 18 communicating with a horizontal slot or opening 20 (Figs. 3and 5) which preferably extends entirely across the end portion of theshuttle. A pair of pins 22 (Fig. 3) extend across the slot or opening 20at each side of Serial No. 223,543.

the opening 18, thus providing a delivery passage or eye for the welt Wbetween the pins A wire prong 24 is mounted in the side portion 25 ofthe shuttle above the slot 16 and projects into a recessed portion 26formed at the extreme upper front portion of the shuttle andcommunicating with the slot 16. The weft thread W, when being threaded,finds its way around and under the prong 24 before it enters the slot 16and offset passage 18.

Tension members I will now describe the provision which I provided twotension arms 30 and 31, mounted on pivots 32 and 33 at opposite sides ofthe central passage 15.

The arm 3() is best shown in Fig. 6, and is pivoted to swinghorizontally in the opening 20. VThe arm has a portion extendingupwardly in the central passage 15, and the upper or free end of the arm30 is offset as indicated at 35. under an overhanging portion of thepart 25 of the shuttle, so that the weft W is looped around the uprightportion of the arm 30 as the shuttle is'threaded, as clearly indicatedin Fig. 2.

A VsuitableV tension device, such as a thin piece of rubber 36, tends toswing the arm 30 yieldingly toward the front end of theshuttle. A p in37 (Fig. 6) limits such forward swinging movement. i The second tenslonarm 31 is mounted 'a the opposite side of the passage 15, extendingacross said passage and having a hookshaped portion 40 extending intothe lower portion of the slot 16. A tension band or other device 41swings this arm yieldingly against a stop pin 42 (F ig. A4). The arms'30and 31 thus tend naturally to assume positions as far as possibleseparated from each other.

As the shuttle is threaded, the weft W first passes forwardly alongsidethe arm 30 and then passes rearwardly under the prong 24 and around thearm 30 and over the top of the The offset end projects j weft. Thistension is very delicate and has Veye connected therewith, a pair oftension been found very effective in taking up the slack of the weft andthus preventing kinking thereof during the operation of the loom.

Having described my invention and the advantages thereof I do not wishto belimited to the details herein disclosed otherwise than as set forthin the claims, but what I claim is:

1.Av self-threading loom shuttle having a longitudinal passage with aslot and delivery eyeconnected therewith, a pair of tension arms mountedin said shuttle and extending into said passage to engage the wefttherein, means to move said arms yieldingly `apart to take up slackweft, and means toguide said weft on insertion in said shuttleautomatically about said tension arms and through said slot and deliveryeye, said latter means being rendered effective by the movements of theshuttle in the loom.

2. A self-threading loom shuttle having al longitudinal passage with aslot and delivery arms mounted in said shuttle and each extendingtransversely of said shuttle into said passage, and means to move saidarms yieldingly apart to take up slack weft.

3. A self-threading loom shuttle having a longitudinal passage with aslot and delivery connected therewith, a pair of tension arms mounted insaid shuttle, one of said arms extending transversely across saidpassageand the other arm extending a substantial distance into said passage,and means to move longitudinal passage with a slot and delivery eyeconnected therewith, a pair of tension v arms mounted in said shuttleand extending into said passage to engage the weft therein,

v`means to move said arms yieldingly apart,

saidarms having end portions effective to loop the yarn about said armsin position to be tensioned by separating movement thereof, and means toguide said weft on insertion insaid shuttle automatically about saidtension arms and through lsaid slot and delivery eye, said latter meansbeing rendered effective by the movements of the shuttle in the loom. v

5. A self-tlireadiiig loom shuttle having a longitudinal passagewith aslot and delivery eye connected therewith, a lpair of tension armsmounted in said shuttle and extending into said passage to engage theweft therein, and means to move said arms yieldingly apart to take upslack weft, one of said arms having a free end projecting into said slotand effective to engageand guide the weft and extending into saidlongitudinal passage, said inclined slot being positioned in one sideVwall of said passage and having a portion y extended downwardly beyondsaid delivery eye to form a temporary guiding-passage for the wcf'tduring the second fiightof the shuttle. Y

In testimony whereofV I have affixed my signature.

ALLAN s. HUTcHiNs.

hereunto ico

